How to run this project

1.Install maven

2.At project root path, run maven install

mvn install    

You will find a jar package under project root/target/trainRoute-1.0-SNAPSHOT.jar

3. run jar with command "java -jar trainRoute-1.0-SNAPSHOT.jar [inputFileName]"

Example: 
E:\code\trainRoute\target>java -jar trainRoute-1.0-SNAPSHOT.jar ..\input.txt

trainRoute-1.0-SNAPSHOT.jar will try read input.txt by default if you do not provide a input file name.
Input file content looks like: AB5, BC4, CD8, DC8, DE6, AD5, CE2, EB3, AE7